Depends what you mean - you can set a camera to point at an item, or to point at a null which you then parent to an item (this gives a bit more flexibility) if you want to have it track, or you can animate movements of the camera as you do other items, or you can parent a camera to another item (to achieve the effect of a camera mounted on a car for instance). There can be problems when the rotations hit +/-180 degrees, however, which may require manual tweaking.